Beating-engine.



I. A. MUIR.

BEATING ENGWE.

APPLICATION FILED NOV. 3, 191?.

Patented June 18, 191%,

1W TTORNE 1L I FAMES M'Ullltt, @F MORRIfiTQWN HEW FEREEY.

BEATlNG-ENGHTJE.

naeaear.

specification of Letters Patent.

Patented June lid, llfild...

Application filed November 3, 1917. I Serial it 0. aoaceo.

To all whom it may concern Be it known that 1, JAMES A. More, a citizen of the United States, residing at Morristown, in the county of Morris and State of New Jersey, have invented certain new and useful Improvements in Beating-Engines, of which the following is a specification.

The object of this invention is to improve the construction of the beater rolls of socalled heating or washing engines used in the manufacture of paper for the reduction of the paper pulp whereby principally to make them stronger and better adapted to withstand the hard wear and tear to which such devices are subjected.

In the accompanying drawing,

Figure 1 is a plan of the improved beater roll;

Fig. 2 is an end elevation thereof;

Fig. 3 is a sectional view on the line 55 of Fig. 2;

Figs. 4 and 5 are enlarged transverse sectional views of a fragment of the beater roll, Fig 4 showing the same before and Fig. 5 showing the same after certain fillets have become locked in place by swelling; and r Fig. 6 is a perspective view of one of the fillets.

The beater roll is constructed as follows: There are two or more spaced metallic heads i suitably secured on the shaft 0, and bolted to each head there is a wooden support the heads and wooden supports are circu ar in form, or substantially so, each support being of somewhat less diameter than the corresponding head. The several heads are provided with dove-tail grooves 7c equally spaced from each other, and these receive the blades Z which in cross-section are outwardly tapering, and they also receive between their bottoms and the opposed or inner edges of the blades the wedges m. The wooden supports j are sufficiently smaller in diameter than the heads to permit the wedges to be driven in and clear the supports. As will be seen on reference to Fig. 1, it is preferred that the parts so far described be constructed and arranged so that the blades will be disposed on the bias. By driving in the wedges m the blades are obviously secured in place in the heads in a very substantial and permanent manner. The spaces between the blades are filled in, so as to prevent the pulp from entering into the beater roll, in much the same manner as in my Patent No. 1,225,476, dated May 8, 1917; that is to say, wooden fillets n are nailed to the wooden supports 3' between the blades and then superposed wooden strips are nailed to the fillets. But in the present construction, the fillets are of such depth that when each has been nailed in place it will-project appreciably inward beyond the inner edges of the two blades which flank it, as indicated at p in Figs. 4 and 5, whereby when the fillets become soaked with the water in the vat the projecting portions p will swell as illustrated in Fig. and thus the fillets will be locked in place. The fillets, when initially secured in place between the blades, jam the blades apart and so tighten up the whole structure, and it will be obvious that when the swelling occurs the locking in of the fillets incident to such swelling will very efiectively maintain this tightened up state. Each fillet has its ends preferably rabbeted, as at 9', so that. it may abut against the peripheries of the supports j and also extend to the outer faces of the heads 2', it being preferred that the fillets and strips 0 be coincident in length with the blades.

It will be understood that, as in my patented construction, the strips 0 may be successively removed as the blades wear away.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is l. A beater roll including a plurality of spaced heads having dove-tailed transverse grooves in their peripheries, beater blades having dove-tail base portions fitting said grooves, wedges driven in between the bottoms of said grooves and the bases of said blades, fillets j ammed in between the blades, and means to secure the fillets in their jammed-in relation to the blades.

2. A beater roll including a plurality of spaced heads having dove-tail transverse ooves in their geripheries, beater blades avmg dove-tail ase portions fitting said grooves, wedges driven in between the bot toms ofsaid grooves andthe bases of said 5 blades, fillets jammed in between the blades, and means to secure the fillets in their jammed-m relation to the blades, each fillet 

